CN1347186A - Improved coring drill motor and method for obtaining core sample of matter - Google Patents
Improved coring drill motor and method for obtaining core sample of matter Download PDFInfo
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- CN1347186A CN1347186A CN01140897.9A CN01140897A CN1347186A CN 1347186 A CN1347186 A CN 1347186A CN 01140897 A CN01140897 A CN 01140897A CN 1347186 A CN1347186 A CN 1347186A
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- 239000011162 core material Substances 0.000 description 101
- 239000000463 material Substances 0.000 description 10
- 238000005553 drilling Methods 0.000 description 9
- 239000011435 rock Substances 0.000 description 9
- 238000004804 winding Methods 0.000 description 6
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- 230000008859 change Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/04—Electric drives
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/18—Anchoring or feeding in the borehole
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
- E21B44/005—Below-ground automatic control systems
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/02—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
- E21B49/06—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil using side-wall drilling tools pressing or scrapers
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- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geochemistry & Mineralogy (AREA)
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- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Sampling And Sample Adjustment (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Earth Drilling (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The present invention provides an improved coring motor for use in obtaining a core sample from the side wall of a drilled bore hole. The present invention provides controllable rotation, extension and retraction of the coring bit relative to the side wall without complicated positioning linkages and with conservation of space for use in slim tools for use downhole.
Description
Technical field
The invention provides a kind of improved coring bit motor and a kind of method that is used for obtaining the material core from the sidewall of drilling well.
Background technology
Usually in the earth's crust, get out drilling well so that other needs and the naturally occurring material that obtains the natural sediment of hydrocarbon and in geological structure, carry secretly.One elongated well pierces underground and it is by the scopodromic from the teeth outwards geologic position of rig.In traditional " rotary drilling " operation, rig rotates a drill set, and it pipe joint that comprises each steel drilling pipe connected to one another is to rotate a device of going into the well (BHA) and a drill bit, and they all are connected in the lower end of drill set.In the process of drill-well operation, the pumping drilling fluid is referred to as drilling mud usually, and circulates by BHA and drill bit downwards along the inside of drilling pipe, and returns in the annular channel on surface.
Get core and normally downcut the process of part of an inside of material by instrument cutting.Though some softer materials can be taken a sample by being pressed in material such as soil or the pitch one with getting the translation of core sleeve, harder material generally need cut with the coring bit of rotation; That is employing has empty cylindrical drill among the cutting teeth of the cutting end of drill bit circumference setting.The core material of obtaining is collected in the coring device that can regain from pit shaft usually.Get core generally be used to get rid of undesired material part or obtain representational material sample for analyzing so that obtain information about its physical property.Get core and be widely used for determining the architectonic physical property in down-hole that in the exploration of mineral or oil and exploitation, runs into.
For the traditional core of getting that obtains the well that naturally occurring hydrocarbon gets out adopts the coring bit and the core cylinder that are connected in the drill set end to carry out.Core is collected in the core cylinder when the coring bit of rotation penetrates valuable structure.This core process of getting has been interrupted normal drilling process basically, because must shed drill bit and replace coring bit from the drill set end.It may be very time-consuming and expensive getting core by this way.Yet this method all can guarantee to obtain the high one-tenth power of core usually for the possessive construction that drills by this way.
The feature of traditional sidewall rotary coring is to adopt a coring bit, and it has the cylindrical structural of hollow and around the cutting teeth of the circumferential abutment of an openend.Coring bit rotates around its axis when it is pressed onto the sidewall of well usually.When sidewall downcuts a core, core is housed inside in the hollow cylinder that inwall limited by coring bit.The best rotary speed of coring bit and the power (drill bit being pushed the size of the axial force of sidewall) that is added in the best on the drill bit usually decide by the structural type of being got core with by the physical characteristic of coring bit.
Oil and other naturally occurring mineral deposition or gas often are present in the geological structure degree of depth of porous in the earth's crust.Valuable being configured in can adopt coring tool to survey so that obtain representational, as to take from the borehole wall that is adjacent to valuable structure rock sample in the drilling well.The core that this representational rock sample normally adopts the cylindrical coring bit of hollow to get from structure.Usually sidewall is got the rock sample that core obtains and is referred to as " core " usually.Core be actually take off from the borehole wall and regain in coring tool with surface to be transported to.
The analysis of core and research can make engineer and geologist assess important constructing variable, for example reserves (porosity), constitute the rock of structure flow potential (permeability), retrievablely be present in the hydrocarbon in the structure or the component of mineral, and the irreducible water saturation of rock.These assessed values are conclusive to the enforcement of thereafter design and fully complete program, this program makes can exploit each selected structure and zone, and these structures and zone are attractive economically the deciding of data declaration that obtains according to by core.
Some coring tools that obtain core and method have been used for traditional sidewall and have got core.Usually have two kinds to get the core method and apparatus, i.e. core is got in rotary coring and impact.The objective of the invention is to rotary coring and since the high-quality of the core that obtains this be preferred method.
The rotary coring of sidewall is usually directed to be pressed onto the opening of the cylindrical coring bit of hollow and circumference cutting head that expose on the borehole wall and the rotary coring drill bit cuts to impel at front end.Coring tool in valuable zone or structure by the influence that is not subjected to the borehole wall near the protection of the rotation core drill bit of borehole wall orientation.Coring bit radially outward launches away from the coring tool axis and towards borehole wall direction.
Coring bit is connected in by an extensible axle or mechanical linkage usually and gets the core motor.This or linkage towards sidewall direction axial advance rotary coring drill bit so that the cutting head of coring bit contact sidewall.Coring bit penetrates sidewall by the rock of getting rid of in the cylindrical cutting zone.The circumference cutting head of coring bit has many teeth and often is inlaid with carbide alloy, diamond or other have the material of the senior hardness that is used for rock cutting.
Cylindrical core is housed inside the inside of coring bit in cutting the process of core.After the core of the length that obtains requiring, core is the disengaged configuration rock by disconnect the binding (radial section) that stays in the cutting head of the opening of coring bit.Core drill bit and core are wherein return and are retracted in coring tool by the axle or the linkage that will be used for coring bit is extended to the position of its expansion.The core of regaining can enter from coring bit in the coring tool so that can use coring bit to obtain later sample in the same or different degree of depth.
Rotary coring is a method of preferably obtaining core, because core keeps it to flow and the performance of storage and not being included in is impacted and got the fracture in the core method and condense.Yet effectively the rotary coring method requires to use effectively limited space.Because need the operation of many parts and machinery in order to obtain a traditional sidewall core, traditional rotation sidewall is got the problem that there is the limited space correlation of many and available down-hole in core.When successfully well being got into darker structure, and when the correct perpendicular positioning from surface location obtains directed pit shaft length by length, it is more elongated that these wells must become, thereby provide little space for installation, expansion and the operation of traditional coring device.
Though advantageously obtain representational sample big as accessing, have some physical constraints to make to obtain not only difficulty but also expensive of big core from sidewall.The length limited of core is in the stroke or the stroke of coring bit.That is to say, begin to contact time of sidewall, enter of the mechanical property decision of the maximum axial displacement of sidewall by coring tool from the cutting teeth of coring bit.
The mechanical structure of the coring tool of prior art is stipulated by several different parameters.In order to cut, the rotary coring drill bit must adopt certain the light mechanical power source that is included in the coring tool to make it to rotate on its axis.The motor of the core drill bit in the rotary coring instrument generally is the hydraulic motor that is driven by hydraulic oil, and this hydraulic oil is produced by electrically driven (operated) pump.Electrically driven (operated) hydraulic oil pump is by the driven by power that offers motor by cable, and this motor is used for descending, rising and controls coring tool and roughly determine its position in pit shaft.The rotation of coring bit generally realizes by coring bit being utilized a mechanical linkage be connected in hydraulic motor.And it must extend outwardly into the sidewall of outside in the coring tool housing when coring bit launches, and extends much further into sidewall then in the rotary course of coring bit so that the cutting core.At last, after the cutting of core was finished, coring bit and the core that comprises within it must be by in the indentation coring tools.If adopt same coring bit will obtain other later cores, after must discharging and be stored in the coring tool, this rock sample is transported to the surface from coring bit.All mechanical devices, hydraulic motor, from motor to coring bit be used for rotating and the mechanical linkage of extendable drill bit and coring bit itself all must " storage " at their fixed structures in elongated coring tool housing in this instrument is near sidewall till the valuable zone.During use, coring tool is necessary for coring bit and the rotating speed that needs is provided and stretches and so that successfully obtain core.The problem with size of machinery is sizable, and the present invention provides a kind of more effective and compact apparatus and method for obtaining core.
In addition, coring device of the prior art mechanically be usually very complicated and thereby in operating process, be prone to all faults, making them is very insecure in subsurface environment.Therefore, one-tenth power aspect the sidewall core is often very low is reluctant to adopt obtaining owing to them in many oil companies.
Here need a kind of device, its can stretch coring bit and apply power by coring bit suppress on the sidewall, after obtaining core with coring bit indentation coring tool in and in the overall process of cutting core the angular speed rotary coring drill bit to require.Here need a kind of device, it can extend, return the mechanical linkage that does not have the complicated space that occupies preciousness with the rotary coring drill bit, that is needing a kind of effectively " encapsulation " device, it occupies little space in coring tool inside when the fixing position of not launching.Here need a kind of improved core motor of getting, its very compact making can adopt two or more to get the core motor to obtain a plurality of samples in single coring tool.
The problem that the present invention gets core to the traditional sidewall in the limited space environment of elongated pit shaft provides a kind of solution.Withdrawal and the analysis of core under its unspoiled state provides valuable geological information, and it improves its analysis forcefully and makes resolution concerning the geologist of oil company.
Summary of the invention
The invention provides a kind of improved core motor of getting, it is actually two motors, a rotation motor and a propulsion motor, the rotation of controlling coring bit of working together, the load on the drill bit (weight-on-bit) and stretch or return.Rotation motor comprises a rotatable stator, a rotor and a rotor sleeve.Propulsion motor comprises that similarly one advances stator, to advance rotor and to advance rotor sleeve.These two motors are incorporated into custom-designed driving shaft separately, and this driving shaft can be connected in a coring bit in its end.This driving shaft is designed to be made by the operation of rotation motor its rotation and is made its stretching, extension and return by the operation of propulsion motor.Driving shaft and coring bit be towards the stretching, extension of sidewall direction, and driving shaft and coring bit later to the returning of coring tool inside, realize by speed with respect to the rapid change propulsion motor of rotation motor.This design can encapsulate one or more these improved core motors of getting in coring tool inside, a single down-hole by the utmost point effectively.
Description of drawings
Fig. 1 illustrates the improved sectional view of core motor when the position that it does not launch of getting;
Fig. 2 illustrates the improved sectional view of core motor when the position that it partly launches of getting;
Fig. 3 illustrates the perspective view of the structure of driving shaft, and this driving shaft has axial axial trough and the screw thread that is stacked in above the axle tooth that is formed at therebetween;
Fig. 4 illustrates the perspective cut-away schematic view of the structure of rotor sleeve, and this rotor sleeve has internal tooth, and this internal tooth is designed to be sliding engaged to the axial trough on the outer surface of driving shaft;
Fig. 5 illustrates the perspective cut-away schematic view of the structure that advances rotor sleeve, and this rotor sleeve has internal thread, and this internal thread is designed to engage the screw thread on the axle tooth on the outer surface that is arranged in the driving shaft between each axial trough.
Embodiment
Fig. 1 and 2 is the cutaway view of an embodiment preferred of coring tool 10 of the present invention, and this coring tool 10 is in the structure of not launching and partly launch respectively.Partly the structure of Zhan Kaiing is used for representing that driving shaft 44 and coring bit 18 partly extend outwardly toward their expanded position from coring tool 10, this expanded position and sidewall core to get core relevant.
Get core equipment 10 and comprise two separate or independent motors, they are controlled mutually collaboratively, one rotation motor is used for rotating driveshaft 44 and a propulsion motor and is used for when driving shaft 44 rotations it being moved axially, its axial displacement or return with in the indentation coring tool 10 towards the sidewall of getting core (the right direction among Fig. 1 and 2) or from sidewall.Rotating driveshaft 44 needed power may be above driving shaft 44 being extended into needed power in the structure in getting the core process.Therefore, rotation motor is will be than propulsion motor big and will produce big power than propulsion motor probably.Rotation motor comprises a rotatable stator 24, a rotor 22 and a rotor sleeve 23, and each is all arranged with one heart around a central axis common for 17.Rotatable stator 24 generally comprise winding that electric lead twines in case when the winding of electric current by rotatable stator 24 on rotor 22 magnetic moment induced electricity.Rotor 22 is arranged in the inside of rotatable stator 24 with one heart and should be positioned to and do not contact with rotatable stator 24 with rotatable stator 24 closed ground electromagnetism UNICOMs.The spacing of this precision between rotatable stator 24 and the rotor 22 relation can comprise stator and rotor be installed in a shared structure or the housing 12 and keep by any traditional mode.Though rotatable stator 24 is fixed with respect to housing 12, rotor 22 is installed or is fixed on the housing 12 around central axis rotation and by bearing or lining.
Fig. 4 is the perspective cut-away schematic view of rotor sleeve 23, and this rotor sleeve 23 has the socket teeth 145 that extends radially inwardly, and these socket teeth 145 engage with the corresponding axial trough 45 of the driving shaft 44 shown in Fig. 3 or cooperate.Rotor sleeve 23 is cylindrical sleeves of a hollow, its internal diameter is equal to or slightly greater than the external diameter of driving shaft 44, and when being contained in rotor sleeve 23 on the driving shaft 44, radially the socket teeth 145 of inwardly extending towards the hollow centre direction of rotor sleeve 23 is slidingly received in the axial trough 45 of driving shaft 44.Rotor sleeve 23 preferably is incorporated into or is fixed on the rotor 22.Perhaps, rotor sleeve 23 and rotor 22 can be a global facility and rotor sleeve 23 is formed on the inner surface of rotor 22.In arbitrary mode, rotor sleeve 23 all has the surface towards inside that is provided with tooth.
Refer again to Fig. 1 and 2, propulsion motor has the structure that is similar to rotation motor.Specifically, propulsion motor comprises that one advances stator 34, to advance rotor 32 and to advance rotor sleeve 33, and each is all arranged with one heart around a central axis common for 17.Advance stator 34 to generally comprise the winding of electric lead winding so that when electric current passes through the winding of propelling stator 34, advancing magnetic force induced electricity on the rotor 32.Advance rotor 32 to be arranged in the inside that advances stator 34 with one heart and should be positioned to and do not contact with advancing stator 34 with advancing stator 34 closed ground electromagnetism UNICOMs.The spacing of this precision between stator and rotor relation can comprise stator and rotor be installed in a shared structure or the housing 12 and keep by any traditional approach.Though stator is fixed with respect to housing 12, rotor also thereby by bearing or lining is installed or is fixed on the housing around central axis rotation or rotation.
Fig. 5 is for advancing the perspective cut-away schematic view of rotor sleeve 33, this propelling rotor sleeve 33 has the screw thread 146 that is formed on the radially inner inner surface, this screw thread 146 be formed on the driving shaft 44 shown in Fig. 3 the axle tooth 48 outer surface on respective threads match.Advance the propelling rotor 32 of rotor sleeve 33 and combination to pass through the electric current 64 of application controls in advancing stator 34 around driving shaft 44 rotations.Advance rotor sleeve 33 preferably to be incorporated into or be fixed in and advance on the rotor 32.Perhaps, advance rotor sleeve 33 and to advance rotor 32 can be a global facility and make and advance rotor sleeve 33 to be formed on the inner surface that advances rotor 32.In arbitrary mode, advance rotor sleeve all to have the surface that is provided with screw thread towards inside.
The outer surface of driving shaft 44 also is provided with a plurality of screw threads 46, and these screw threads are stacked between each axial trough 45 above the axle tooth 48 that the length of driving shaft 44 forms.These screw threads 46 can be provided with any pitch, the degree of depth or spacing, but the pitch that should consider screw thread 46 with the degree of impact position control and when getting core propulsion motor can pass to load on the drill bit of coring bit 18.Advance the combination of the screw thread on rotor sleeve 33 and the driving shaft 44 one axial or reciprocal power should be able to be passed on the driving shaft 44.
When electric current passed through the winding of rotatable stator 24, a moment put on the rotor sleeve 23 of rotor 22 and its combination dynamo-electricly, thereby made these parts around axis 17 rotations.The rotation of driving shaft 44 realizes by the rotation that drives rotor sleeve 23, and rotor sleeve 23 rotating driveshafts 44 are also passed to coring bit 18 with power.The rotating speed of driving shaft 44 can be controlled independently and accurately by the electric current 61 that leads to rotatable stator 24.
When electric current passed through to advance stator 34, a moment put on the propelling rotor sleeve 33 that advances rotor 32 and its combination dynamo-electricly, thereby these parts are rotated so that driving shaft 44 extends axially, keeps or returns around axis 17.The angular speed rotation that driving shaft 44 axial or reciprocal moves through with the angular speed that is not equal to rotor sleeve 23 advances the propelling rotor sleeve 33 of rotor 32 and its combination to realize.Advance rotor sleeve 33 and move axially driving shaft 44 by this screw thread 146 with engaging of matching thread above a tooth 48 of processing on driving shaft 44 in the rotation of the screw thread 146 that forms on the inner radial surface that advances rotor sleeve 33.Advance rotor sleeve 33 turn to its on the axial motion of structure (dextrorotation or left-handed) decision driving shaft 44 of screw thread.The coring bit 18 that advances rotor 32 and advance the rotation (with the angular speed of the angular speed that is not equal to rotor sleeve 23) of rotor sleeve 33 or make driving shaft 44 and its combination advances or coring bit 18 is returned to the fixing not position of expansion that it is getting (left side in Fig. 1) core equipment 10 in to sidewall direction (the right in Fig. 1).
For obtaining a core, coring tool 10 must controllably be pushed coring bit 18 to when coring bit 18 rotations and enter sidewall with the cutting core.Therefore, the socket teeth 145 in the rotor sleeve 23 (or at least one key or pin) must keep with the axial trough of driving shaft 44 or groove 45 machineries with contacting of rotation and no matter driving shaft 44 moving axially with respect to rotor sleeve 23.Equally, for rotary coring drill bit 18 cutting and to obtain core effectively, the load on the drill bit, promptly the axial force that is applied on the coring bit 18 by driving shaft 44 is must be indispensable.Therefore, advance screw thread 146 on the inner surface of rotor sleeve 33 must keep the respective threads on the axle tooth 48 with driving shaft 44 Mechanical Contact and no matter the rotation of driving shaft 44 by rotor sleeve 23.These conditions are met by the unique design of the driving shaft shown in Fig. 3 44.
The rotating speed of driving shaft 44 is also equated with it by the rotating speed decision of the rotor sleeve 23 of rotor 22 and its combination.If rotor sleeve 23 and advance the rotating speed of rotor sleeve 33 to equate then advances the rotating speed of rotor sleeve 33 must equal the rotating speed of driving shaft 44.Under this operating condition, because the propelling rotor sleeve 33 of rotation keeps static with respect to drive shaft rotating 44, driving shaft 44 will not have axial displacement.Moving axially by the rotating speed change with respect to driving shaft 44 of drive shaft rotating 44 advances the rotating speed of rotor sleeve 33 to realize.Under this condition, driving shaft 44 can utilize drive shaft speed W with respect to the axial displacement that advances rotor sleeve 33
Ds, advance the rotating speed W of rotor sleeve 33
TrsAnd the pitch P by screw thread (at the axle tooth and advance on the inner radial surface of rotor sleeve)
ThreadsCalculate.
Suppose that the screw thread 146 on the rotating shaft 44 is right-handed thread and rotation motor and (from getting the core drill head end observation of the core equipment 10) rotation all along clockwise direction of propelling rotor, the transmission rate of coring bit 18 can be determined by following formula:
V
cb＝P
threads×(W
trs-W
ds)
For example, if the per inch of driving shaft has 10 screw threads (then pitch P of screw thread
ThreadsBe 0.1 inch every screw thread), W
TrsBe 2005rpm (revolutions per minute) and W
DsBe 2000rpm, then by the transmission rate V of driving shaft 44 towards the coring bit of the propelling speed decision of sidewall direction
CbTo be (0.1 * (2005-2000))=0.5 inch per minute clock or 0.0083 inch per second.Otherwise if core successfully cuts and obtains, then driving shaft 44 can be by the rotating speed W with respect to driving shaft 44
DsReduce the rotating speed W that advances rotor sleeve 33
TrsCome in the indentation coring tool 10.For example, if W
DsKeep 2000rpm and W
TrsDrop to 1950rpm, then the returning speed and will be (0.1 * (1950-2000))=-5 inch per minute of driving shaft 44, or-0.0833 inch per second (negative sign represent coring bit return).Though the former transmission rate V of 0.5 inch per minute of coring bit
CbBeing suitable for cutting effectively a core, is for the more suitably speed in the coring bit 18 indentation coring tools 10 but the latter of-5.0 inch per minutes returns speed.One nonreversing motor can provide the stretching, extension of the coring bit 18 that driving shaft 44 is connected with it by the rotating speed that change to advance rotor sleeve 33 and rotor sleeve 23 relative to each other and return.For given motor speed, coring tool 10 can be retrofit into the speed of utilizing other screwed part to change stretching, extension and returning so that customization is got the dynamic property of core process to be fit to the physical property of structure.Though the accompanying drawing that provides illustrates embodiment preferred, it has the exhaust end or " inboard " that advance stator 34, advance rotor 32 and contiguous driving shaft 44 and holds 49 propelling rotor sleeve 33, and the rotor sleeve 23 of the coring bit 18 of rotatable stator 24, rotor 22 and contiguous driving shaft 44 or " outside " end, but these two groups parts that be closely related and interactional can be opposite.
More than discuss and illustrated to operating the precision of wanting required for the present invention effectively.The transmission rate of 0.5 inch per minute is passed through W in getting the core process
TrsBring up to and control to only than W
DsHigh 5rpm reaches, and its difference has only 0.25%.For Control current 61 and 64 accurately can be utilized various devices to reach this controlling level.Rotor detector 25 and propelling rotor detector 35 be " calculating " rotors 22 and the revolution that advances rotor 32 respectively.Rotor detector 25 and propelling rotor detector 35 can use magnetic-type, light formula, electronic type or mechanical type or these certain compound mode to detect the position of rotor separately.Rotor detector 25 and propelling rotor detector 35 can detect and be installed in each detected epitrochanterian transponder beacon, and the signal 63 of the signal 62 of detected rotor position and detected propelling rotor-position is passed to microprocessor 60.Microprocessor 60 is calculated rotor 22 and the rotating speed that advances rotor 32, and regulates rotatable stator electric current 61 automatically and advance the rotating speed W of rotor current 64 with the coring bit of maintenance requirement
Cb(it equals the rotating speed W of driving shaft 44
Ds) and the transmission rate V of the coring bit that requires
Cb
The present invention provides improved encapsulation usefulness for coring tool.Coring tool can comprise of the present inventionly a plurality ofly to be got the core motor or gets core module, is positioned at the inside of single coring tool all.These are got that core module can use simultaneously or use so that obtain core from the different degree of depth successively.For the purpose of controlling, respectively getting core module can be each other with being electrically connected in coring tool.Each gets core module can have a unique electronic address, thus can control independently each get core module and with other to get core module irrelevant.
A plurality ofly get the core motor or get core module inner employing of single coring tool, can remove in the coring tool of prior art in order to discharge the core discharge mechanism of the used complexity of the core from coring bit, regained.The invention provides a kind of core module of getting, it can be regained core among the hollow inside of driving shaft 44, the inner storeroom as the core of regaining of this hollow.The core of regaining can be got the core module from this from the teeth outwards and discharge.Additional parts, core retainer plate tube for example, the inside that can be arranged in driving shaft 44 to be isolating and the protection core is avoided corroding or damaging, otherwise may cause this erosion or damage by the inwall of driving shaft 44 in rotary course.
The present invention do not plan to illustrate at coring bit 18 and penetrated after sidewall arrives its limit that penetrates, and the core that interrupts cutting is to break away from its that stay and step that engages structure.This core can disconnect by the mobile disengaged configuration of coring bit 18 with respect to structure.In case core is disconnected and disengaged configuration, it can be regained in the coring tool 10 that has coring bit 18.
The present invention can also comprise the axially movable electronic installation that is used to stop driving shaft 44 or physical unit so that eliminate because excessive mobile of driving shaft 44 makes driving shaft undesirably break away from the possibility of arbitrary rotor sleeve.The device that is used to stop like this can comprising that the programming of controller is with the position of tracking as the driving shaft 44 of the function of the relative speed that is produced by two rotors/sleeve.Perhaps, the device that is used to stop can be included in driving shaft 44, rotor sleeve 23 or to advance the mechanical component that forms on the rotor sleeve 33, and it prevents the undesirable propelling or the axial advancement of driving shaft 44 physically.Example can be exhaust end 49 places of driving shaft 44 eliminate or the outer surface of " filling " driving shaft 44 on the sub-fraction tooth, as shown in Figure 3.This structure in the operating process of getting core motor 10 for prevent driving shaft 44 break away from occasionally propelling sleeve 33 provide one reliably the device.
The meaning of " motor ", as used in this article term, comprise a kind of consumed power and the device that produces mechanical energy, but be not limited thereto kind, and it can comprise that layout that more than one stator combines with more than one rotor is in order to rotate, to rotate or to operate more than one mechanical output link.The meaning of " groove " as used in this article term, comprises screw thread, convex ridge, guide, groove and passage, but is not limited to these.The meaning of " tooth " as used in this article term, comprises convex ridge, screw thread, groove and passage, but is not limited to these.
Though the above is at embodiment preferred of the present invention, what it is contemplated that out other does not break away from its basic scope with further embodiment, and its scope is determined by appended claims.
Claims (17)
1. a sidewall is got core equipment, and it comprises:
One rotation motor, it has the rotor that a rotatable stator and has one or more internal tooths;
One propulsion motor, it has one and advances stator and to have the propelling rotor of internal thread; And
One tubular drive shaft, it has an axis, can be connected in drill bit end on the coring bit, with one have one or more outer surfaces that are superimposed with the cannelure of one group of screw thread, it is characterized in that, one or more cannelures match with one or more internal tooths of rotor, and the internal thread of driving shaft and the threads engaged that advances rotor.
2. equipment as claimed in claim 1 is characterized in that,
Rotatable stator engages rotor dynamo-electricly and makes its axis rotation around tubular drive shaft, thereby rotor is passed in controlled angular displacement;
Wherein, advance stator to engage dynamo-electricly and advance rotor and make its axis rotation, thereby the propelling rotor is passed in controlled angular displacement around tubular drive shaft; And
Wherein, the drill bit end of tubular drive shaft can controllably extend axially and return in the rotary course of tubular drive shaft with respect to the controlled differentiated angular displacement that advances rotor by rotor.
3. equipment as claimed in claim 1, it also comprises the rotating speed of a controller in order to control rotation motor and propulsion motor.
4. equipment as claimed in claim 1 is characterized in that one or more cannelures are parallel to the axis of driving shaft.
5. equipment as claimed in claim 1 is characterized in that, one or more teeth of rotor are arranged on the independent rotor sleeve.
6. equipment as claimed in claim 1 is characterized in that, advances the screw thread of rotor to be arranged on the independent propelling rotor sleeve.
7. a sidewall is got core equipment, and it comprises:
One rotation motor, it has a rotatable stator and a rotor;
One propulsion motor, it has one and advances stator and to advance rotor; And
One tubular drive shaft, it has an axis, can be connected in a drill bit end and an outer surface on the coring bit, it is characterized in that rotor is incorporated into the outer surface of driving shaft rotatably rather than axially, and wherein advances rotor both axially to be incorporated into the outer surface of driving shaft rotatably.
8. equipment as claimed in claim 7 is characterized in that, rotor is incorporated into this outer surface rotatably with the relation of groove and tooth.
9. equipment as claimed in claim 7 is characterized in that, advances rotor not only to be incorporated into this outer surface rotatably but also axially by threads engage.
10. equipment as claimed in claim 7 is characterized in that rotor directly is adjacent to the propelling rotor.
11. one kind is used to realize that sidewall gets the equipment of core, it comprises:
One is used to produce the rotation motor of first torque;
One is used to produce the propulsion motor of second torque;
One tubular shafts;
Being used for first torque conversion is the device of described axle around the rotation of its axis; And
Being used for second torque conversion is the device that move of described axle along its axis.
12. equipment as claimed in claim 11 is characterized in that, described rotation motor comprises that a tubulose rotatable stator and a tubulose rotor are in order to put on first torque rotary switching device on the described axle.
13. equipment as claimed in claim 11 is characterized in that, described propulsion motor comprises that one advances stator and to advance rotor in order to second torque is put on the mobile conversion equipment on the described axle.
14. equipment as claimed in claim 12, it is characterized in that, rotary switching device comprises that one is connected in the rotor sleeve of rotor, and this rotor sleeve has the tooth that extends internally from its inner surface in order to engage with groove that outer surface at described tubular shafts forms.
15. equipment as claimed in claim 13, it is characterized in that, mobile conversion equipment comprise one advance rotor sleeve, this propellings rotor sleeve have surface within it go up the screw thread that forms in order to the engage threads of adding that on the outer surface of described tubular shafts, forms.
16. one kind is moved in sidewall is got the process of core operation and the method for rotary coring drill bit, it may further comprise the steps:
One coring bit is connected in an end of the tubular element of in downhole tool, arranging;
Downhole tool is positioned in the pit shaft of a contiguous valuable structure sidewall;
The tubulose rotation motor of utilization in tubular element is concentrically positioned in downhole tool brings out the rotation of this tubular element;
Thereby the tubulose propulsion motor of utilization in tubular element is concentrically positioned in downhole tool bring out this tubular element move with coring bit push the structure sidewall in; And
Thereby utilize this tubulose propulsion motor to bring out moving of this tubular element coring bit is withdrawed from the structure sidewall.
17. a manufacturing, it comprises:
(a) computer-readable program code means is used for the core process of getting at core and makes mensuration and the control of computer realization to the rotating speed of the rotating driveshaft of getting the core motor;
(b) computer-readable program code means be used for the core process of getting at core make computer realization to the mensuration of the rotating speed of the shroud member that is incorporated into rotating driveshaft with screw thread and control so that do not influence the axial displacement of rotating driveshaft simultaneously at both rotating speed;
(c) computer-readable program code means be used to make the rotating speed of shroud member that computer calculates requirement with the transmission rate of the pre-provisioning request of the coring bit of realizing being connected in driving shaft so that take core;
(d) thus the rotating speed of the shroud member that the electric current that computer-readable program code means is used to make computer to calculate the inflow electro-motor stator of requirement requires with influence realize being connected in the desired transmission rate of coring bit of driving shaft so that take core;
(e) computer-readable program code means is used for making computer to penetrate fully the initial of state from the swing offset identification with respect to driving shaft of the shroud member measured;
(f) thus computer-readable program means is used for the penetrating of coring bit that the rotating speed of the shroud member that electric current that the core process of getting at core makes computer calculate the inflow electro-motor stator of requirement requires with influence interrupts being connected in driving shaft; And
(g) computer-readable program means be used for core take and allow core is regained after the inside of getting core assembly, thereby the rotating speed of the shroud member that the electric current that makes computer calculate the inflow electro-motor stator of requirement requires with influence is return the coring bit that is connected in driving shaft.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/669190 | 2000-09-25 | ||
| US09/669,190 | 2000-09-25 | ||
| US09/669,190 US6371221B1 (en) | 2000-09-25 | 2000-09-25 | Coring bit motor and method for obtaining a material core sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1347186A true CN1347186A (en) | 2002-05-01 |
| CN1199338C CN1199338C (en) | 2005-04-27 |
Family
ID=24685432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01140897.9A Expired - Fee Related CN1199338C (en) | 2000-09-25 | 2001-09-25 | Improved coring drill motor and method for obtaining core sample of matter |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6371221B1 (en) |
| CN (1) | CN1199338C (en) |
| AU (1) | AU764936B2 (en) |
| CA (1) | CA2356576C (en) |
| DZ (1) | DZ3125A1 (en) |
| FR (1) | FR2814494B1 (en) |
| MX (1) | MXPA01009429A (en) |
| NO (1) | NO326026B1 (en) |
| SA (1) | SA01220464B1 (en) |
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| CN103066745A (en) * | 2012-12-17 | 2013-04-24 | 上海德驱驰电气有限公司 | Motor automatic feed control system |
| CN109403899A (en) * | 2018-11-08 | 2019-03-01 | 深圳大学 | Core drilling rig drive system |
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| US7240744B1 (en) | 2006-06-28 | 2007-07-10 | Jerome Kemick | Rotary and mud-powered percussive drill bit assembly and method |
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| US8061446B2 (en) | 2007-11-02 | 2011-11-22 | Schlumberger Technology Corporation | Coring tool and method |
| US8550184B2 (en) * | 2007-11-02 | 2013-10-08 | Schlumberger Technology Corporation | Formation coring apparatus and methods |
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| US20110174543A1 (en) * | 2010-01-20 | 2011-07-21 | Adam Walkingshaw | Detecting and measuring a coring sample |
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| US10472912B2 (en) * | 2014-08-25 | 2019-11-12 | Schlumberger Technology Corporation | Systems and methods for core recovery |
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-
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-
2001
- 2001-08-29 AU AU65528/01A patent/AU764936B2/en not_active Ceased
- 2001-09-05 CA CA002356576A patent/CA2356576C/en not_active Expired - Fee Related
- 2001-09-15 DZ DZ010064A patent/DZ3125A1/en active
- 2001-09-19 MX MXPA01009429A patent/MXPA01009429A/en active IP Right Grant
- 2001-09-24 NO NO20014616A patent/NO326026B1/en not_active IP Right Cessation
- 2001-09-24 FR FR0112265A patent/FR2814494B1/en not_active Expired - Fee Related
- 2001-09-25 CN CN01140897.9A patent/CN1199338C/en not_active Expired - Fee Related
- 2001-10-17 SA SA01220464A patent/SA01220464B1/en unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066745A (en) * | 2012-12-17 | 2013-04-24 | 上海德驱驰电气有限公司 | Motor automatic feed control system |
| CN103066745B (en) * | 2012-12-17 | 2016-02-10 | 上海德驱驰电气有限公司 | A kind of motor auto-feed control system |
| CN109403899A (en) * | 2018-11-08 | 2019-03-01 | 深圳大学 | Core drilling rig drive system |
| CN109403899B (en) * | 2018-11-08 | 2023-12-08 | 深圳大学 | Coring drilling machine driving system |
Also Published As
| Publication number | Publication date |
|---|---|
| DZ3125A1 (en) | 2004-09-25 |
| CA2356576C (en) | 2005-03-29 |
| AU764936B2 (en) | 2003-09-04 |
| FR2814494A1 (en) | 2002-03-29 |
| US6371221B1 (en) | 2002-04-16 |
| CN1199338C (en) | 2005-04-27 |
| NO20014616L (en) | 2002-03-26 |
| CA2356576A1 (en) | 2002-03-25 |
| NO20014616D0 (en) | 2001-09-24 |
| AU6552801A (en) | 2002-03-28 |
| FR2814494B1 (en) | 2004-11-26 |
| NO326026B1 (en) | 2008-09-01 |
| SA01220464B1 (en) | 2007-05-09 |
| MXPA01009429A (en) | 2004-07-16 |
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